/**
 * Metro Map Builder - Default Theme
 * Architecting Tomorrow blog design system
 */

:root {
  /* Theme colors */
  --theme-primary: #0a1628;
  --theme-secondary: #1e3a8a;
  --theme-accent: #1d4ed8;
  --theme-accent-hover: #1e3a8a;
  --theme-highlight: #D63384;
  --theme-success: #10b981;
  --theme-warning: #f59e0b;
  --theme-danger: #dc2626;
  --theme-danger-bg: #fee2e2;
  --theme-danger-hover: #fecaca;
  
  /* Neutrals */
  --theme-white: #FFFFFF;
  --theme-light: #f8fafc;
  --theme-pale: #eff6ff;
  --theme-border: #e2e8f0;
  --theme-muted: #64748b;
  --theme-text: #334155;
  
  /* Component colors */
  --header-bg: linear-gradient(135deg, var(--theme-secondary) 0%, var(--theme-primary) 100%);
  --header-text: var(--theme-white);
  --sidebar-bg: var(--theme-white);
  --canvas-default-bg: #eff6ff;
  --modal-title: var(--theme-secondary);
  --selection-bg: #fdf2f8;
  
  /* Legend colors (for dynamic theming) */
  --legend-completed: #10b981;
  --legend-active: #D63384;
  --legend-milestone: #1e3a8a;
  --legend-future-bg: #f1f5f9;
  --legend-future-border: #94a3b8;
  --legend-default-border: #1e3a8a;
  
  /* Status colors */
  --status-default-bg: #f1f5f9;
  --status-default-text: #475569;
  --status-completed-bg: #ecfdf5;
  --status-completed-text: #059669;
  --status-active-bg: #fdf2f8;
  --status-active-text: #db2777;
  --status-milestone-bg: #eff6ff;
  --status-milestone-text: #1d4ed8;
  --status-future-bg: #f8fafc;
  --status-future-text: #94a3b8;
  
  /* Sizing */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

/* ============================================= */
/* Base Reset & Layout */
/* ============================================= */

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  background: #e2e8f0;
  height: 100vh;
  overflow: hidden;
}

.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: auto auto 1fr;
  height: 100vh;
}

/* ============================================= */
/* Header */
/* ============================================= */

.header {
  grid-column: 1 / -1;
  background: var(--header-bg);
  color: var(--header-text);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.header h1 { font-size: 15px; font-weight: 700; }

.header-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============================================= */
/* Toolbar Row */
/* ============================================= */

.toolbar-row {
  grid-column: 2 / -1;
  background: var(--theme-white);
  border-bottom: 1px solid var(--theme-border);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.tool-btn {
  padding: 6px 12px;
  border: none; border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 500;
  cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  background: var(--theme-light); color: var(--theme-text);
  transition: all 0.15s;
}
.tool-btn:hover { background: var(--theme-pale); }
.tool-btn.active { background: var(--theme-accent); color: var(--theme-white); }
.tool-btn svg { width: 16px; height: 16px; }

.tool-sep { width: 1px; height: 24px; background: var(--theme-border); margin: 0 8px; }

.zoom-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--theme-muted);
  min-width: 40px;
  text-align: center;
}

/* ============================================= */
/* Sidebar */
/* ============================================= */

.sidebar {
  grid-row: 2 / 4;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--theme-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-section {
  padding: 14px;
  border-bottom: 1px solid var(--theme-border);
  flex-shrink: 0;
}

.sidebar-section.grow {
  flex: 1 0 auto;
  min-height: 120px;
}

.sidebar-section.collapsible {
  padding-bottom: 0;
}
.sidebar-section.collapsible .sidebar-title {
  cursor: pointer;
  padding-bottom: 14px;
  margin-bottom: 0;
}
.sidebar-section.collapsible .sidebar-title:hover {
  color: var(--theme-accent);
}
.collapse-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.collapse-icon {
  transition: transform 0.2s;
}
.sidebar-section.collapsed .collapse-icon {
  transform: rotate(-90deg);
}
.collapse-content {
  padding-bottom: 14px;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
}
.sidebar-section.collapsed .collapse-content {
  max-height: 0 !important;
  padding-bottom: 0;
}

.sidebar-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--theme-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ============================================= */
/* Forms */
/* ============================================= */

.form-group { margin-bottom: 10px; }
.form-label { display: block; font-size: 11px; font-weight: 600; color: var(--theme-muted); margin-bottom: 4px; }
.form-input, .form-select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--theme-accent); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* ============================================= */
/* Buttons */
/* ============================================= */

.btn {
  padding: 7px 12px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s;
}
.btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.btn-primary { background: var(--theme-accent); color: var(--theme-white); }
.btn-primary:hover { background: var(--theme-accent-hover); }
.btn-secondary { background: var(--theme-light); color: var(--theme-text); border: 1px solid var(--theme-border); }
.btn-secondary:hover { background: var(--theme-pale); border-color: var(--theme-accent); }
.btn-danger { background: var(--theme-danger-bg); color: var(--theme-danger); }
.btn-danger:hover { background: var(--theme-danger-hover); }
.btn-sm { padding: 4px 8px; font-size: 11px; }
.btn-block { width: 100%; justify-content: center; }

/* ============================================= */
/* Toggle & Size Controls */
/* ============================================= */

.toggle, .size-toggle { display: flex; border: 1px solid var(--theme-border); border-radius: var(--radius-sm); overflow: hidden; }
.toggle-opt, .size-opt {
  flex: 1; padding: 7px; text-align: center; font-size: 11px; font-weight: 600;
  background: var(--theme-light); color: var(--theme-muted); border: none; cursor: pointer;
}
.toggle-opt:hover, .size-opt:hover { background: var(--theme-pale); }
.toggle-opt.active, .size-opt.active { background: var(--theme-accent); color: var(--theme-white); }

.size-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}
.preset-btn {
  padding: 4px 8px;
  font-size: 10px;
  font-weight: 500;
  background: var(--theme-light);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--theme-muted);
}
.preset-btn:hover {
  background: var(--theme-pale);
  border-color: var(--theme-accent);
  color: var(--theme-text);
}

.auto-size {
  font-weight: 400;
  color: var(--theme-accent);
}

/* ============================================= */
/* Track List */
/* ============================================= */

#track-list {
  min-height: 60px;
}
.track-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; margin-bottom: 6px;
  background: var(--theme-light); border: 1px solid var(--theme-border); border-radius: var(--radius-sm);
  cursor: pointer; transition: all 0.15s;
}
.track-item:hover { border-color: var(--theme-accent); }
.track-item.selected { border-color: var(--theme-highlight); background: var(--selection-bg); }
.track-item.dragging { opacity: 0.5; }
.track-item.drag-over { border-color: var(--theme-highlight); border-style: dashed; }
.track-drag {
  cursor: grab;
  color: var(--theme-muted);
  padding: 2px;
  margin-left: -4px;
}
.track-drag:active { cursor: grabbing; }
.track-dot { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.track-info { flex: 1; min-width: 0; }
.track-name { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track-meta { font-size: 10px; color: var(--theme-muted); }

/* ============================================= */
/* Canvas */
/* ============================================= */

.canvas-wrap {
  overflow: scroll;
  background: var(--canvas-bg, var(--canvas-default-bg));
}

#map-canvas svg {
  display: block;
}

/* Interactive SVG */
#map-canvas .station { cursor: grab; }
#map-canvas .station:active { cursor: grabbing; }
#map-canvas .station.selected circle:first-of-type { 
  stroke: var(--theme-highlight) !important; 
  stroke-width: 5px !important;
}
#map-canvas .station:hover circle:first-of-type { filter: brightness(1.1); }
#map-canvas .track-header { cursor: pointer; }
#map-canvas .track-header:hover rect { fill: var(--theme-pale); }
#map-canvas .crossing-marker { cursor: pointer; }
#map-canvas .crossing-hit-area:hover { 
  fill: rgba(8, 145, 178, 0.2) !important; 
}

/* ============================================= */
/* Hint Bar */
/* ============================================= */

.hint-bar {
  position: fixed;
  bottom: 20px; left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,0.75);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  z-index: 50;
  pointer-events: none;
}

/* ============================================= */
/* Floating Panel */
/* ============================================= */

.floating-panel {
  position: fixed;
  background: var(--theme-white);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-md);
  z-index: 200;
  min-width: 60px;
  min-height: 30px;
  user-select: none;
  resize: both;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 8px;
  background: var(--theme-light);
  border-bottom: 1px solid var(--theme-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  cursor: move;
  font-size: 9px;
  font-weight: 600;
  color: var(--theme-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.panel-close {
  background: none;
  border: none;
  font-size: 14px;
  cursor: pointer;
  color: var(--theme-muted);
  line-height: 1;
  padding: 0 4px;
}
.panel-close:hover { color: var(--theme-text); }

.panel-body {
  padding: 6px;
  flex: 1;
  overflow: auto;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 4px 12px;
}

.floating-panel.collapsed { 
  resize: none;
  height: auto !important;
  width: auto !important;
  min-height: 0;
  min-width: 0;
}
.floating-panel.collapsed .panel-body { display: none; }

.panel-close::before { content: '−'; }
.floating-panel.collapsed .panel-close::before { content: '+'; }

/* ============================================= */
/* Legend */
/* ============================================= */

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  color: var(--theme-text);
  white-space: nowrap;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  box-sizing: border-box;
}

.legend-dot.completed { background: var(--legend-completed); }
.legend-dot.active { background: var(--legend-active); }
.legend-dot.milestone { background: var(--legend-milestone); }
.legend-dot.future { background: var(--legend-future-bg); border: 2px dashed var(--legend-future-border); }
.legend-dot.default { background: var(--theme-white); border: 2px solid var(--legend-default-border); }

/* ============================================= */
/* Context Menu */
/* ============================================= */

.ctx-menu {
  position: fixed;
  background: var(--theme-white);
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  min-width: 150px;
  padding: 4px;
  z-index: 1000;
  display: none;
}
.ctx-menu.show { display: block; }
.ctx-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.ctx-item:hover { background: var(--theme-pale); }
.ctx-item.danger { color: var(--theme-danger); }
.ctx-item.danger:hover { background: var(--theme-danger-bg); }
.ctx-sep { height: 1px; background: var(--theme-border); margin: 4px 0; }

/* ============================================= */
/* Modal */
/* ============================================= */

.modal-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}
.modal-bg.show { opacity: 1; visibility: visible; }
.modal {
  background: var(--theme-white);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 380px;
  max-height: 85vh;
  overflow: auto;
}
.modal-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--theme-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-head h3 { font-size: 14px; font-weight: 700; color: var(--modal-title); }
.modal-body { padding: 16px; }
.modal-foot {
  padding: 12px 16px;
  border-top: 1px solid var(--theme-border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ============================================= */
/* Color Picker */
/* ============================================= */

.colors { display: flex; gap: 4px; flex-wrap: wrap; }
.color-btn {
  width: 24px; height: 24px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s;
}
.color-btn:hover { transform: scale(1.15); }
.color-btn.selected { border-color: var(--theme-primary); }
.color-btn.gradient-btn {
  background: linear-gradient(135deg, #1e3a8a 0%, #D63384 100%);
}

.bg-color-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.color-input {
  width: 32px;
  height: 24px;
  padding: 0;
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
}

.color-input::-webkit-color-swatch-wrapper { padding: 2px; }
.color-input::-webkit-color-swatch { border-radius: 2px; border: none; }

/* ============================================= */
/* Stepper Controls */
/* ============================================= */

.stepper {
  display: flex;
  align-items: center;
  gap: 4px;
}
.stepper-btn {
  width: 24px; height: 24px;
  border: 1px solid var(--theme-border);
  border-radius: var(--radius-sm);
  background: var(--theme-white);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--theme-text);
  display: flex;
  align-items: center;
  justify-content: center;
}
.stepper-btn:hover { background: var(--theme-light); }
.stepper-val {
  min-width: 28px;
  text-align: center;
  font-size: 12px;
  font-weight: 500;
}

/* ============================================= */
/* Inline Options */
/* ============================================= */

.inline-options {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
  width: 14px;
  height: 14px;
  cursor: pointer;
}

/* ============================================= */
/* Status Pills */
/* ============================================= */

.status-pills { display: flex; gap: 4px; flex-wrap: wrap; }
.status-pill {
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
}
.status-pill.default { background: var(--status-default-bg); color: var(--status-default-text); }
.status-pill.completed { background: var(--status-completed-bg); color: var(--status-completed-text); }
.status-pill.active { background: var(--status-active-bg); color: var(--status-active-text); }
.status-pill.milestone { background: var(--status-milestone-bg); color: var(--status-milestone-text); }
.status-pill.future { background: var(--status-future-bg); color: var(--status-future-text); }
.status-pill.selected { border-color: currentColor; }

/* ============================================= */
/* Toast */
/* ============================================= */

.toast {
  position: fixed;
  bottom: 20px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--theme-primary);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 13px;
  z-index: 1001;
  opacity: 0;
  transition: all 0.25s;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ============================================= */
/* Theme Switcher */
/* ============================================= */

.theme-select {
  padding: 5px 8px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  color: var(--header-text);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
}
.theme-select:focus { outline: none; border-color: rgba(255,255,255,0.5); }
.theme-select option { color: #333; background: white; }